(n): someone who contracts for and supervises construction (as of a building)
(n): the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps
(n): a card player in a game of bridge
(n): (law) a party to a contract
(n): a person involved in legal proceedings
(n): a bodily organ that contracts
(n): a fully differentiated structural and functional unit in an animal that is specialized for some particular function
